Derrick reenforcement



May 14, 1929. A. L. DAY

DERRICK REENFORCEMENT Filed Jan. 13, 1928 III/II [III INVENTOR.

JL ZHDa y A TTORNEY.

Patented May 14, 1929.

' UNITED; STATES ARTHURL. DAY, on TULSA, OKL HOMA, AssIGNon TOVBRAD-EVN STEEL. & WINCH COMPANY, or TULSA, OKLAHOMA. W

DERRICK REENFORCEMENT.

Application filed January 13, 1928. Serial No. 248,525.

My invention consists in new and useful improvements in clamping means for securing a releg or reenforcing leg to the common leg of a derrick, skeleton tower or the like employed in connection with oil wells, and has for its object to provide an arrangement of theabove character particularly adapted for use with I-beams or channel irons when employed as relegs.

Another object of my invention is to provide a structure which may be easily assembled and dismantled, and one which will securely hold the several parts of the derrick reenforcement in position.

A still further object and advantage of my construction resides in the fact that bolts, screws and rivets are unnecessary in its application to the'derrick, thus affording a simple reenforcing structure of the maximum salvage value. I

With the above and other objects in view which will appear as the description proceeds, my invention consists in the novel features herein set forth, illustrated in the accompanying drawing, and more particularly pointed out in the appended claims.

Referring to the drawing, in which numerals of like character designate similar parts throughout the several views,

Fig. 1 is a perspective view in side eleva tion, partly broken away, showing a section of a derrick leg with my improvedreenforcing means, and clamping device applied thereto.

Fig. 2 is a cross section taken on line 2-2 of Fig. 1.

Fig. 3 is a cross section taken on line 33 of Fig. 1, and

Fig. 4 is a View somewhat similar to Fig. 1, but from a difierent angle, showing the reenforcing and clamping members in place.

In the drawings, 1 represents a common leg of the derrick consisting of the usual angle iron supported on a suitable base 2, said leg being provided at the central portion of the angle on its outer face, at predetermined points throughout its length, with bent bars 3 secured thereto by welding or other suit able means. 4 designates the usual outer clamping plate or corner plate which is V-shaped, and fits tightly against the outer face of the leg 1, being provided with a plurality of key slots 5', for gripping the ends of brace rods when the derrick is assembled.

of each common leg of the derrick. 'abuttingvetrical ends of each of the I-beams.

6 and 7 represent upper and lower. sections of the releg or supporting leg, which, as shown in the drawing, consist of 'I-beams mounted adjacent the center of the outer false '1 1e 6 and 7 are provided with verticallyiextending slots 8, adapted to engage the bent bar arrangement 3 on thecommon leg 1, when said I-beams are in position, as clearly shown in'Figs. 1 and 4c of the drawing. Toward-the upper end of each section of the I-beam reenforcement, and centrally of the web there of, I provide'an aperturev 9, as shown on the lower section 7 in-Fig. 1; I 7

i 10 represents a hook bar or clampingbar, substantially V-shaped and provided at each end with an inwardly bent hook member 11, adapted to engage the vertical edges of the common leg 1 of the derrick. 'The central portion of the clamp bar 10 is bent to form a looped ear 12, adapted to register with and extend through the aperture 9 in the web of the I-beam, as shown in Figs. 1 and 2, and

receives a standard wedge pin 13, to secure the I-beams in place. This clamp bar 10 is preferably composed of substantially resilient metal, whereby one of said hook members 11 may be hooked over one of the vertical edges of the" common leg 1, and by striking a light blow on the side of the ear 12, the opposite hook member 11 will snap around the other side of the common leg of the derrick and securely grip the same. The clamp bar may be easily removed by prying off with any pointed instrument.

It will be noted that when theseveral parts are assembled, the toes and web of the I-beam relegs come into bearing on the corner plate 4 at approximately the same time, the toes striking slightly in advance of the web. The wedge pin 13 has a tendency to line the I- beams up squarely behind the angle leg 1 of the derrick, and when said pin is driven tight, the web of the I-beams will come into bearing on the corner plate 4, and prevent the pressure of said wedge springing the I-beams out of shape.

It will also be noted that the toes of the I-beams will hold the clamp bar 10 in position, so that the hooks 11 will come into position around the common leg 1, when the wedge is driven tight. r

The bent bar 3, besides serving as means for may be made in the details of construction Without departing from the spirit of the invention as set forth in the following claims.

What I claim and desire to secure by Letters Patent is: I V

1. In a derrick,'the combination of angle iron leg members suitably joined in a derrick structure, secondary leg members consisting of lengths of I-beams having slotted extremities, bent bars secured to and projecting from said angle iron leg members, adj acent the abutting extremities of said I-beams, said slots in the latter being adapted to engage said bent bars, Wherebysaid I-beams are secured together in continuous string arrangement for reenttorcing said primary leg members during heavy duty, and means removably securing said secondary members to said angle iron members.

2. A clampingba r for securing a releg to the angle iron main leg of a derrick, comprising a strip of resilient metal bent substantially V-shaped and terminating in an inwardly bent hook at each end, the central portion of said strip forming a looped ear, the arms of said V being parallel to and lying against the adjacent surfaces of the angle iron leg, said hooks being adapted to engage the vertical edges of the main leg, said looped ear passing through an aperture in said releg, and a Wedge'pin for engaging said ear and securing curing said I-beams to said angle legs, each comprising a strip of resilient metal bent sub stantially V shaped and terminating in an inwardly bent hook at each end, the central portion of said strip forming a looped ear, the

arms of said V being parallel to and lying against the adjacentsurfaces of said angle legs, said hooks being adapted to engage the vertical edges of the angle legs, said looped ear passingthrough an aperture in the Web of said I-beam, and a Wedge pin for engaging said ear, and securing the parts together with the inner vertical edges of said I-beams en gaging the outer surfaces of the arms of said V-shaped strip.

In testimony whereof I aiiix my signature.

ARTHURL. DAY. 

